
* {
    margin: 0;
    padding: 0;
}

.top {
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 50px;
    background-color: black;
    color: white;
}

.top > div {
    display: flex;

}

.top > div > div {
    margin: 0 20px;
    cursor: pointer;
}

.top > div:nth-child(1) > div:nth-child(1) {
    cursor: auto;
}

/*-------------left----------------------*/
.left {
    background-color: gray;
    width: 200px;
    height: calc(100vh - 50px);

}

.left > div > div {
    width: 200px;
    line-height: 30px;
    text-align: center;
}

.left > div > div > div:nth-child(1):hover {
    background-color: rgb(0, 150, 136);
}

.left > div > div > div:nth-child(2) {
    text-indent: 2em;
    cursor: pointer;
    display: none;
}

.left > div > div > div:nth-child(2) > div:hover {
    background-color: rgb(150, 0, 136);
}

.top + div {
    display: flex;
    justify-content: space-between;
}

.right {
    width: calc(100vw - 200px);
    height: calc(100vh - 50px);

}